Got oneOpcom clone V1.99running Vaux-com 120309a, first I had no issue, but I tried to test different software versions coming with hardware ending connection error withecu. When I check interface by software, 120309a, I get the version and interfacepassesthe test. But when I try to connect the carireceive ”Interface communication error, or interface not powered from car!". But when the hardware is not connected to OBD2 I don’t receive error text. Insteadthe hardware passes through and ECU communication page opens. Then no communication with ECM appears due to not connecting with OBD2 port.

Herearesome more info:

FW: V1.99

Interface: 120309a

Driver date: 7/12/2013

Driver version: 2.8.30.0

VCP inuncheck

USB\VID_0403&PID_6001&REV_0600

USB\VID_0403&PID_6001

I runVaux-com 120309a on Win7.

Share the pictures with bothsidedof PCB.

HereOpcom clone V1.99 hardware outlook and package:

Source:http://www.obdexpress.co.uk/wholesale/op-com-firmware-v1.99.html

Finally Solved!!!

Tip for the ones with the same problem:

If no FW update was attempted and your device can pass fw+bootloader test don’t worrycountinuereading!
Opcom or Vauxcom clone software version 2012 and above changes FTDIeeprom. Following that the drivers can be updated bywindowsdue to hardware change if you had used other drivers than OPCOMUSB.inf, 2008 version, which cause the problem.
Open 2010 china clone and test your interface. If testis passed and you can see the FW version, try automatic vehicle identification. After reading ECM without closing the 2010 program, openvauxcom120309a. Then choose your desired part to open and enjoy passing "Interface communication error, or interface not powered from car!” error message. If you get errormessage during working on 120309a try automatic vehicle identification on china clone 2010 again. You can try this cycle as much as you get error. Besides that, 120309a functionalities, database, is still availablebythis way.

Source:http://blog.obdexpress.co.uk/2019/02/22/solved-opcom-v1-99-vaux-com-120309a-communication-error/

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